Material:Stainless Steel Technics:stainless steel hex bar Type:Coupling Connection:male, female Shape:Equal, reducing Head Code:Round Size:1 4"-4" Material:SS304, SS316, SS316L Thread:BSP, JIC, SAE, NPT, DIN2999, ISO 7 1 Certificate:ISO 9001:2008, CE Standard:Eaton, Parker sample:YES customize:yes, sample or drawing